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There is a newer version: 5.4.6

package org.rapidoid.fluent.forx;

/*
 * #%L
 * rapidoid-fluent
 * %%
 * Copyright (C) 2014 - 2016 Nikolche Mihajlovski and contributors
 * %%
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * #L%
 */

import java.util.function.Consumer;
import java.util.function.Function;
import java.util.function.Predicate;
import java.util.stream.Stream;

/**
 * @author Nikolche Mihajlovski
 * @since 5.0.0
 */
public class ForEach {

	private final Stream stream;

	public ForEach(Stream stream) {
		this.stream = stream;
	}

	public ForEach where(Predicate predicate) {
		return new ForEach(stream.filter(predicate));
	}

	public  ForEach withNonNull(Function transformation) {
		return new ForEach(stream.filter(x -> transformation.apply(x) != null));
	}

	public  ForEach withNull(Function transformation) {
		return new ForEach(stream.filter(x -> transformation.apply(x) == null));
	}

	public void run(Consumer consumer) {
		stream.forEach(consumer);
	}

}